r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000500)='/sys/power/pm_trace', 0x22902, 0x0)
write$bt_hci(r0, &(0x7f0000000000)={0x1, @host_buffer_size={{0xc33, 0x7}}}, 0xb)